Science & Mathematics - 1 November 2006

i need to know how this work i dont under stand this my mom said she dont know too. this is for school i am in 4grad.please help me

2006-11-01 01:31:52 · 3 answers · asked by Anonymous in Engineering

Hello All,

I run a Design Company, and as part of my expension, I am mortgaging to build an "Eco-Friendly" office. I have grants from the DTI and assistance from several groups to build a "green" building at a smaller cost than a traditional "bricks and mortar" construction.

We are looking at using Solar panels on the roof to reduce our electric and heating costs, and potentially tying it in with a small windfarm. My question is, does anyone know (on a conceptual basis) what equipment is needed to allow these two energy devices to work in harmony with mains supply?

Your thoughts & advice are appreciated

Steve
Modelspace Design

2006-11-01 01:28:06 · 7 answers · asked by Steven N 4 in Engineering

2006-11-01 01:27:22 · 11 answers · asked by musi 1 in Botany

2006-11-01 01:18:22 · 9 answers · asked by Anonymous in Weather

2006-11-01 01:16:06 · 7 answers · asked by Chris 2 in Earth Sciences & Geology

2006-11-01 01:16:04 · 18 answers · asked by queenie 1 in Weather

Can you explain to me how I would factorise 15a^2 - 14a - 8. Giving me explanation's of your method.

2006-11-01 01:12:56 · 12 answers · asked by helen y 1 in Mathematics

goodness of fit test

2006-11-01 01:08:56 · 1 answers · asked by emaroxx 1 in Mathematics

this is same as looking closely at the little pixel of the monitor..

2006-11-01 01:06:38 · 2 answers · asked by joe 4 in Other - Science

is it 5 or 2

2006-11-01 01:06:37 · 17 answers · asked by shabbir don 1 in Mathematics

You have 2 coins in your pocket that equal 30 cents. One of them is not a nickel. What are the two coins?

2006-11-01 01:06:16 · 10 answers · asked by ben t 2 in Mathematics

2006-11-01 01:06:04 · 6 answers · asked by harish amin 1 in Zoology

2006-11-01 01:05:51 · 4 answers · asked by Glendon 1 in Mathematics

Can anyone solve this when y=1

2006-11-01 01:02:32 · 4 answers · asked by Glendon 1 in Mathematics

Explain how the nitrogenous bases pair is essential for the processes of DNA replication, transcription, and translation.
Also, Explain why the specific base pairing nature of DNA and RNA necleotides is essention for the processes of DNA replication, transcription, and translation.

2006-11-01 01:01:59 · 3 answers · asked by Anonymous in Biology

2006-11-01 01:01:57 · 5 answers · asked by laurie c 1 in Zoology

2006-11-01 01:01:54 · 3 answers · asked by Richard M 1 in Chemistry

Am I doing this right?This is factoring the difference of two squares. Ok the problem a^2-(b+c)^2
ok so I have 2 sets of parenthesis one of which is postive one negative, I find the square root of the first term and write it in the first space in each parenthesis ie. (a+ )(a- ) ok then the find the square root of the second term (b+c)^2 which would be bc?

so a^2-(b+c)^2 would be (a+bc)(a-bc)?

If I made a mistake in this process please correct me I really need the help, factoring is not my favorite part of math.

2006-11-01 01:01:09 · 4 answers · asked by Anonymous in Mathematics

It came up at college today and no one had any idea

2006-11-01 01:00:35 · 4 answers · asked by Anonymous in Mathematics

2006-11-01 01:00:29 · 11 answers · asked by shabbir don 1 in Mathematics

Just Wandered!!

2006-11-01 00:59:04 · 19 answers · asked by just_wandered 1 in Biology

2006-11-01 00:47:14 · 7 answers · asked by Anonymous in Engineering

2006-11-01 00:45:47 · 7 answers · asked by betty y m 1 in Physics

I'm talking about over two lengths of a 100m pool including the turn at the end?

2006-11-01 00:42:53 · 10 answers · asked by Anonymous in Zoology

i want to know if it is possible to find such an irrational number and put it in a form that i can write as an expression of integers.

for example: for 0.41 i can write sqrt(2);

fractions are alowed and i don't care how big the integers are.

2006-11-01 00:42:45 · 4 answers · asked by JinX 2 in Mathematics

Just a question... Not homework... Since i know the answer.. But do you?????

2006-11-01 00:42:01 · 5 answers · asked by Miss LaStrange 5 in Chemistry

2006-11-01 00:36:31 · 18 answers · asked by vincent n 1 in Mathematics

Virtually its impossible for a human to reach a point B from a point A travelling a distance X miles!!! But then, how do we reach our travel destinations before the eternal destiny?

Let us try an example now:

You are asked to travel from a point A to point B separated by a distance of X miles.

Let us assume that every day you travel onhalf the leftover distance.

Hence your total travelled distance can be expressed by this series:

Travelled distance after n days= X/2 + X/4 + X/8 + ......+ X/2^n

(Note: Even after n days still a half distance will be left which you travelled in the 'n' th step)
Yet we reach destinations!!!!
So, in real life when you travel keeping this in mind, moving onehalf the distance leftover every time, when will you reach the destination ? please mathematically prove your answer!

2006-11-01 00:35:56 · 10 answers · asked by Anonymous in Mathematics

x(1-y^2)(1-z^2+y(1-z^2)(1-x^2)+z(1-x^2)(1-y^2)=4xyz

2006-11-01 00:33:04 · 6 answers · asked by Anonymous in Mathematics

2006-11-01 00:30:41 · 3 answers · asked by NONAME 1 in Engineering